Physics 2nd Paper CQ-Rajshahi Board-2022
1. 
Mina a student of class XII, science demonstrated photoelectric effect in the laboratory and drew a graph with the findings from the experiment. There was a battery of 1.5 volt in the laboratory,
2. At normal temperature and pressure one mole Helium gas is kept in a cylinder. Later the volume of that Helium gas is changed 1.5 times first isothermally and then adiabatically.
3. The area of each plate distance of two parallel plates of a capacitor in air are and respectively. If it is charged by then potential is found in between two plates. Later, bisecting each of the plate equally two capacitors are made keeping the distance same and they are arranged in series.
4. 
In Young's double slit experiment a light of wavelength is used. Later the double slit is replaced by a single slit of width .
5. In the year 2010 , there were radioactive substances each of mass . One of them had an average life of 12.5 years. In of the another substance remains intact.